Unit 3 The world of science Period 5 课件

(共31张PPT)
英语 同步课件
外研版 高中 必修第三册
英语
Unit 3　The world of science
Period 5　Writing
1.If I look slightly further than others, it is because I stand on the shoulders of giants.—Newton
如果我看得更远，那是因为我站在巨人的肩膀上。——牛顿
2.Genius is one percent inspiration and ninety nine percent perspiration.—Edison
天才是百分之一的灵感加百分之九十九的汗水。——爱迪生
实验报告
文体感知
完成一个实验的步骤有设计实验、做实验和写实验报告。写实验报告时，注意要完整介绍实验过程，用恰当的表示顺序的词语来清楚表述实验步骤。句式多为祈使句，时态多为一般现在时。
实验报告通常包括以下内容：
1．实验目的；2.实验用品；3.实验方法和过程；4.实验结果；5.结论
实验报告中常用的词语：
1．实验目的：aim、purpose、in order to、to find out...
2．实验用品：apparatus(仪器)、beaker(烧杯)、equipment、test tube(试管)、test tube holder(试管夹)、balance(天平)、liquid、solid、gas...
3．实验过程：process、firstly、secondly、lastly、heat、boil、fill、add...to...、measure、weigh...
4．实验结果：result、conclusion、in a word、in conclusion...
增分佳句
一、描写实验目的
1．...carry out an experiment to find out...
2．The aim of the experiment is to find...
3．...with the purpose of discovering...
二、描写实验用品
1．To carry out/make/do/perform the experiment, you need...
2．The following things are needed...
3．The following apparatus is used...
三、描写实验方法或过程
1．...make good preparations for...
2．It is important that...
3．...do the experiment as follows.
(firstly...secondly...thirdly...finally...;first...then...next...after that...two hours' later...; after several days...)
4．find a better way of doing...
5．...make a good study of...
四、描写实验结论
1．From this experiment we can conclude...
2．...draw/come to the conclusion that...
3．We can learn from the experiment that...
4．We can find out that...
5．You can see/discover...
6．In conclusion...
写作要求
请根据下列内容，写一篇短文，介绍“点不着的纸”整个实验的内容。
实验名称 点不着的纸
实验器材 铜棒(copper rod)，两张相同的长条白纸，火柴
实验步骤 (1)用火柴直接点其中的一张纸条；
(2)将另一张纸条先紧紧缠绕在铜棒上，再去点
实验现象 (1)前一张纸条迅速燃烧；
(2)后一张纸条没有燃烧
实验结论 因为铜具有良好的导热性，这使得纸条点不着
注意：词数80左右。
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
审题谋篇
第一步：审题构思很关键
第二步：核心词汇想周全
1．______________________　　　　　 旨在做
2．______________________ 准备做
3．___________________________ 被紧紧地缠绕在
4．______________ 结果
5．______________________ 得出结论
be designed to do
prepare to do
be wrapped tightly around
as a result
come to a conclusion
第三步：由词扩句雏形现
1．那天，我做了一个家庭小实验，这个实验旨在证明“点不着的纸”是否真的存在。
I ____________________________________ the other day. It ______________________ if “unlit paper” really exists.
did a little home experiment
was designed to find out
2．我准备了一根铜棒，两张相同的长条白纸及火柴来做这个实验。
I______________________________________________________________to do this experiment.
prepared a copper rod, two identical strips of white paper and
matches
3．实验过程如下：首先，用火柴点其中的一张纸条。
其次，将另一张纸条先紧紧缠绕在铜棒上，再去点。
Experimental procedures are below：
____________________________________________.
___________________________________________________________ before lighting the paper.
First, light one of the slips by a match
Then, wrap another slip of paper tightly around the copper rod
4．结果，前一张纸条迅速燃烧而后一张纸条没有燃烧。
______________ the first one burned quickly but the second one did not.
5．在这个实验后，我得出了一个结论。因为铜具有良好的导热性，使纸条点不着。
After this experiment, I______________________ . Because copper has good thermal conductivity, the paper doesn't burn.
As a result,
came to a conclusion
第四步：句式升级造亮点
1．用定语从句升级第三步中的句1
______________________________________________________________________________________________________________．
2．用同位语从句升级第三步中的句5
______________________________________________________________________________________________________________
I did a little home experiment the other day, which was designed to find out if “unlit paper” really exists
After this experiment, I came to a conclusion that because copper has good thermal conductivity, the paper doesn't burn.
第五步：过渡衔接连成篇
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
One possible version：
Unlit Paper
I did a little home experiment the other day, which was designed to find out if “unlit paper” really exists.
I prepared a copper rod, two identical strips of white paper and matches to do this experiment. And the experimental procedures are
below: First, light one of the slips by a match. Then, wrap another slip of paper tightly around the copper rod before lighting the paper. As a result, the first one burned quickly but the second one did not.
After this experiment, I came to a conclusion that because copper has good thermal conductivity, the paper doesn't burn.
假如你是高一学生李华，今天你们班做了一个有趣的实验。请根据以下实验步骤，用英语写一份实验报告。内容包括：
1．实验材料：蜡烛、比蜡烛稍高些的玻璃杯、盆和水
2．实验步骤：(1)将蜡烛置于盆底，并向盆中倒入一些水；(2)点燃蜡烛，将玻璃杯罩在蜡烛上。
3．实验结果：当蜡烛熄灭后，看到玻璃杯中的水面高于盆中的水面。
注意：1.词数80左右；2.可以适当增加细节，使行文连贯。
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
One possible version：
Today, with the help of our physics teacher, we carried out an interesting experiment in class. The following things were used: a candle, a glass that is a little higher than the candle, a basin and some water.
First, we let the candle stand at the bottom of the basin and poured some water into the basin. Then we lit the candle and covered it with the glass that was full of air.We waited until the candle went out.
To our astonishment, we saw that the level of water in the glass is higher than that in the basin. How interesting an experiment lesson we had!
与“吃惊”有关的表达
1．with one's mouth wide open　　 张大嘴
2．be numb with shock 惊呆了
3．in astonishment 惊讶地
4．to one's amazement 让某人惊讶的是
5．His eyes were wide with astonishment.
他惊讶地睁大了眼睛。
6．A flash of surprise ran through his face.
他脸上闪过一丝惊讶。
7．His mouth dropped open in surprise.
他惊讶地张大了嘴。
8．She put her hands to her mouth in surprise.
她惊讶地把手放在嘴上。
谢谢
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